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QSN-8690-1: Pillow vulnerability

September 1, 2026

Summary

Pillow could be made to crash or expose sensitive information if it processed a specially crafted image file.

Details

It was discovered that Pillow did not properly manage memory when processing certain image files. An attacker could possibly use this issue to cause a denial of service or read sensitive data.

Affected QuantaStor releases

ReleasePlatformPackageExposureShipped versionFixed versionStatus
6.9.1.001Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.59.0.1-1ubuntu0.5Fixed in this release
6.9.1.001Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.59.0.1-1ubuntu0.5Fixed in this release
6.9.0.464Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.59.0.1-1ubuntu0.5Fixed in this release
6.9.0.464Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.59.0.1-1ubuntu0.5Fixed in this release
6.8.6.015Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.59.0.1-1ubuntu0.5Fixed in this release
6.8.6.015Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.59.0.1-1ubuntu0.5Fixed in this release
6.8.5.018Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSpython3-pilExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSpython3-pil.imagetkExternally-facing9.0.1-1ubuntu0.49.0.1-1ubuntu0.5Fixed by QuantaStor security update

Internally-facing: only accessible when logged into the QuantaStor console/ssh as the qadmin administrative sudo user; generally lower priority. Externally-facing: part of a service the storage platform presents on the network (or the kernel), so potentially reachable over the network.

CVEs

CVE-2026-59198

References

https://ubuntu.com/security/notices/USN-8690-1

https://nvd.nist.gov/vuln/detail/CVE-2026-59198

Update

Fixes marked Fixed by QuantaStor security update are applied by upgrading QuantaStor with security patches included (Upgrade Manager). Fixed package versions:

PlatformPackageVersion
Ubuntu 20.04 LTSpillow7.0.0-4ubuntu0.9+esm1
Ubuntu 22.04 LTSpillow9.0.1-1ubuntu0.5
Ubuntu 24.04 LTSpillow10.2.0-1ubuntu1.3
resolutepillow12.1.1-2ubuntu1.3